Files
gstack/browse
Garry Tan ce07abe81d feat(browse): load-html, screenshot --selector, viewport --scale, alias dispatch
Wires the new handlers and dispatch logic that the previous commits made
possible:

write-commands.ts
- New 'load-html' case: validateReadPath for safe-dir scoping, stat-based
  actionable errors (not found, directory, oversize), extension allowlist
  (.html/.htm/.xhtml/.svg), magic-byte sniff with UTF-8 BOM strip accepting
  any <[a-zA-Z!?] markup opener (not just <!doctype — bare fragments like
  <div>...</div> work for setContent), 50MB cap via GSTACK_BROWSE_MAX_HTML_BYTES
  override, frame-context rejection. Calls session.setTabContent() so replay
  metadata is rehydrated.
- viewport command extended: optional [<WxH>], optional [--scale <n>],
  scale-only variant reads current size via page.viewportSize(). Invalid
  scale (NaN, Infinity, empty, out of 1-3) throws with named value. Headed
  mode rejected explicitly.
- clearLoadedHtml() called BEFORE goto/back/forward/reload navigation
  (not after) so a timed-out goto post-commit doesn't leave stale metadata
  that could resurrect on a later context recreation. Codex v2 P1 catch.
- goto uses validateNavigationUrl's normalized return value.

meta-commands.ts
- screenshot --selector <css> flag: explicit element-screenshot form.
  Rejects alongside positional selector (both = error), preserves --clip
  conflict at line 161, composes with --base64 at lines 168-174.
- chain canonicalizes each step with canonicalizeCommand — step shape is
  now { rawName, name, args } so prevalidation, dispatch, WRITE_COMMANDS.has,
  watch blocking, and result labels all use canonical names while audit
  labels show 'rawName→name' when aliased. Codex v3 P2 catch — prior shape
  only canonicalized at prevalidation and diverged everywhere else.
- diff command consumes validateNavigationUrl return value for both URLs.

server.ts
- Command canonicalization inserted immediately after parse, before scope /
  watch / tab-ownership / content-wrapping checks. rawCommand preserved for
  future audit (not wired into audit log in this commit — follow-up).
- Unknown-command handler replaced with buildUnknownCommandError() from
  commands.ts — produces 'Unknown command: X. Did you mean Y?' with optional
  upgrade hint for NEW_IN_VERSION entries.

security-audit-r2.test.ts
- Updated chain-loop marker from 'for (const cmd of commands)' to
  'for (const c of commands)' to match the new chain step shape. Same
  isWatching + BLOCKED invariants still asserted.
2026-04-18 18:17:43 +08:00
..